temp

temp.swift

//연결 재시도? 하면서 오류나는 부분입니다.
/* 
 * We will first check if we are already connected to our counterpart
 * Otherwise, scan for peripherals - specifically for our service's 128bit CBUUID
 */
private func retrievePeripheral() {
    print("[hoonki] test=\(TransferService.serviceUUID)")
    //cleanup()
    let connectedPeripherals: [CBPeripheral] = (centralManager.retrieveConnectedPeripherals(withServices: [TransferService.serviceUUID]))

    os_log("Found connected Peripherals with transfer service: %@", connectedPeripherals)

    if let connectedPeripheral = connectedPeripherals.last {
        os_log("Connecting to peripheral %@", connectedPeripheral)
        self.discoveredPeripheral = connectedPeripheral
        centralManager.connect(connectedPeripheral, options: nil)
    } else {
        // We were not connected to our counterpart, so start scanning
        centralManager.scanForPeripherals(withServices: [TransferService.serviceUUID],
                                           options: [CBCentralManagerScanOptionAllowDuplicatesKey: true])
    }
}

// 전송 받은 데이터를 전부 받았는지 확인하고 Label로 보여주기 위한 부분입니다. 
/* 
 *   This callback lets us know more data has arrived via notification on the characteristic
 */
func peripheral(_ peripheral: CBPeripheral, didUpdateValueFor characteristic: CBCharacteristic, error: Error?) {
    // Deal with errors (if any)
    if let error = error {
        os_log("Error discovering characteristics: %s", error.localizedDescription)
        cleanup()
        return
    }

    guard let characteristicData = characteristic.value,
        let stringFromData = String(data: characteristicData, encoding: .utf8) else { return }

    os_log("Received %d bytes: %s", characteristicData.count, stringFromData)

    // Have we received the end-of-message token?
    if stringFromData == "EOM" {
        // End-of-message case: show the data.
        // Dispatch the text view update to the main queue for updating the UI, because
        // we don't know which thread this method will be called back on.

        DispatchQueue.main.asyncAfter(deadline: .now()) { //[weak self] in
            //guard let self = self else { return }
//                self.textView.text = String(data: self.data, encoding: .utf8)

            print("TEST", self.data)
            print(self.label.text)
            print("wtf", String(data: self.data, encoding: .utf8))
          
            // 계속 오류나는 부분
            self.label.text = "wtf"

        }
        // Write test data
        writeData()
    } else {
        // Otherwise, just append the data to what we have previously received.
        data.append(characteristicData)
    }
}